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| Bells
consists of two metal plates which vibrate when they are
stroked along their edges with a rosined bow. When each
plate vibrates at a specific tone, sand on the top of
each plate forms distinctive patterns. Sand bounces on
the vibrating regions of the plates and collects in those
areas where there is no vibration. The patterns are determined
by the shape of the plate and the place, as well as the
manner in which the plate is stroked. |
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